反刍与草食动物营养与饲料 RUMINANT AND HERBIVORE NUTRITION AND FEED

α-硫辛酸、酵母铬对热应激绵羊生长性能、血浆生化指标及营养物质消化利用的影响

  • 毛亚芳 ,
  • 杨改青 ,
  • 王林枫 ,
  • 付彤 ,
  • 廉红霞 ,
  • 张立阳 ,
  • 高腾云 ,
  • 李明
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  • 1. 河南农业大学牧医工程学院, 农业部动物生化与营养重点实验室, 郑州 450002;
    2. 河南农业大学, 现代实验技术与管理中心, 郑州 450002
毛亚芳(1993-),女,河南汝州人,硕士研究生,从事动物营养与饲料科学。E-mail:2217681931@qq.com

收稿日期: 2020-03-17

  网络出版日期: 2020-09-17

基金资助

国家现代奶牛产业技术体系建设专项(CARS-36)

Effects of α-Lipoic Acid and Yeast Chromium on Growth Performance, Plasma Biochemical Indexes and Nutrient Digestion and Utilization of Sheep under Heat Stress

  • MAO Yafang ,
  • YANG Gaiqing ,
  • WANG Linfeng ,
  • FU Tong ,
  • LIAN Hongxia ,
  • ZHANG Liyang ,
  • GAO Tengyun ,
  • LI Ming
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  • 1. College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China;
    2. Advanced Experimental Techniques and Managing Centre, Henan Agricultural University, Zhengzhou 450002, China

Received date: 2020-03-17

  Online published: 2020-09-17

摘要

本试验旨在研究α-硫辛酸(LA)、酵母铬(YC)对热应激绵羊生长性能、血浆生化指标及营养物质消化利用的影响。选择体质健康、年龄和体重相近的绵羊28只,随机分为4组,每组7只羊,分别为对照组(CTL组,饲喂基础饲粮)、LA组(基础饲粮中添加600 mg/kg LA)、YC组(基础饲粮中添加0.5 mg/kg YC)、混合组(MIX组,基础饲粮中添加600 mg/kg LA和0.5 mg/kg YC),试验期50 d。结果表明:各组平均日增重差异不显著(P>0.05);各组营养物质消化利用相关指标差异不显著(P>0.05);与对照组相比,试验组血浆总蛋白(TP)、低密度脂蛋白(LDL)、胆固醇(CHOL)含量显著降低(P<0.05);YC组胴体重显著增加(P<0.05),YC组屠宰率增加了5.52%(P>0.05)。综上所述,饲粮中添加LA、YC对热应激绵羊的蛋白质及脂肪代谢有一定的影响,还可显著提高热应激绵羊胴体重,屠宰率有所增加,对饲料利用率和体增重的影响不显著。

本文引用格式

毛亚芳 , 杨改青 , 王林枫 , 付彤 , 廉红霞 , 张立阳 , 高腾云 , 李明 . α-硫辛酸、酵母铬对热应激绵羊生长性能、血浆生化指标及营养物质消化利用的影响[J]. 动物营养学报, 2020 , 32(9) : 4212 -4221 . DOI: 10.3969/j.issn.1006-267x.2020.09.031

Abstract

This experiment was aimed to study the effects of α-lipoic acid (LA) and yeast chromium (YC) on the growth performance, plasma biochemical indicators and nutrient digestion and utilization of sheep under heat stress. Twenty-eight healthy sheep with the similar age and weight were randomly divided into four groups with 7 sheep in each group, which were control group (CTL group, fed a basal diet), LA group (the basal diet supplemented with 600 mg/kg LA), YC group (the basal diet supplemented with 0.5 mg/kg YC), MIX group (the basal diet supplemented with 600 mg/kg LA and 0.5 mg/kg YC). The experiment lasted for 50 days. The results showed that there was no significant difference in average daily weight gain among the groups (P>0.05); the effects of nutrient digestion and utilization related indicators in each group was not significant (P>0.05); the plasma total protein (TP), low density lipoprotein (LDL) and cholesterol (CHOL) contents in treatment groups were significantly decreased (P<0.05). Body weight in YC group significantly increased (P<0.05), and slaughter rate in YC group increased by 5.52% (P>0.05). In conclusion, adding LA and YC in diets has effects on protein and fat metabolism in sheep under heat stress, and can significantly improve body weight, the dressing percentage also increases, but has no significant effect on feed utilization and body weight gain.

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